| Acronym | Meaning |
 | BOS | Backup Operating System |
| R/C | Rate Of Climb |
| OSF | Ordnance Storage Facility |
| SOL | Solenoid |
| PWA | Pratt And Whitney Aircraft |
| SLD | Stiff-Leg Derrick |
| SPS | Secondary Propulsion System |
| SDTA | Structural Dynamic Test Article |
| SSPD | Shuttle System Payload Data |
| ITI | Inspection And Test Instruction |
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